{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "3.5.2"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "380f9db39baba66ab6d2210a38da0d4825466300"
            }
          ],
          "repo": "https://github.com/oppia/oppia",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85210.json"
  },
  "details": "Oppia's AdminRoleHandler GET endpoint in core/controllers/admin.py is decorated with open_access, allowing any registered user to enumerate privileged accounts and roles. Attackers can query the endpoint with filter_criterion parameters to retrieve usernames holding specific roles, banned flags, and managed topic identifiers without authorization.",
  "id": "CVE-2026-85210",
  "modified": "2026-09-06T03:31:02.731844986Z",
  "published": "2026-09-03T14:12:21.815Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85210.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-85210"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/oppia-through-3.5.2-missing-authorization-on-adminrolehandler-get"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/oppia/oppia/issues/26652"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/oppia/oppia"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/oppia/oppia/blob/v3.5.2/core/controllers/admin.py"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Oppia through 3.5.2 Missing Authorization on AdminRoleHandler GET"
}